Circuit Description
The Valve relay is part of the Electronic Brake Control Module (EBCM). The EBCM turns ON the valve relay during an ABS stop. The valve relay provides power to the ABS solenoid valves.
Conditions for Running the DTC
DTC C0125 can be set anytime.
Conditions for Setting the DTC
The EBCM detects an open in the valve relay circuitry.
Action Taken When the DTC Sets
| • | The ABS disables |
| • | The ABS warning indicator turns ON |
Conditions for Clearing the DTC
The condition responsible for setting the DTC no longer exists and the Scan Tool Clear DTCs function is used.
Diagnostic Aids
Inspect for the following when diagnosing this part of the Antilock Brake System (ABS):
| • | Open ABS fuse |
| • | Open or high resistance in the solenoid input circuit |
| • | Open or high resistance in the solenoid ground circuit |
Inspect the following harness connectors for the following conditions:
| • | Backed-out terminals |
| • | Improper mating |
| • | Broken locks |
| • | Improperly formed or damaged terminals |
| • | Poor terminal to wiring connections or physical damage to the wiring harness before component replacement: |
| - | Junction block electrical connectors |
| - | Electronic brake control module electrical connector |
Test Description
The numbers below refer to step numbers on the Diagnostic Table.
Step | Action | Value(s) | Yes | No |
|---|---|---|---|---|
1 | Did you perform A Diagnostic System Check - ABS? | -- | Go to Step 2 | |
Does the DTC reset? | -- | Go to Step 3 | Go to Testing for Intermittent Conditions and Poor Connections in Wiring Systems | |
3 |
Was a problem found and corrected? | -- | Go to Step 4 | |
4 | Replace the Brake Modulator Assembly. Refer to Brake Pressure Modulator Valve Assembly Replacement . Is the repair complete? | -- | Go to Step 5 | -- |
5 |
Does the DTC reset? | -- | Go to Step 2 | System OK |
